If n(A)=10,n(B)=15,n(A) = 10, n(B) = 15,n(A)=10,n(B)=15, and n(AcapB)=5n(A \\cap B) = 5n(AcapB)=5, what is n(AcupB)n(A \\cup B)n(AcupB)?
25
20
15
30